Ore-separator



F. CUSHMAN.

K ORE SEPABATOR.

APPLlcATloN man oc. 1, 191e.

Paented Fab. 15, i921.

2 SHEETS-SHEET l.

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F. CUSHMAN URE SEPARATOR. APPLICATION FILED or. I. .1916.

@amma- Feb. '15, 1921.

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2 SHEETS-SHEET 2.

F CUSHMHN FRED CUSHMAN, 0F SEATTLE, "VVJLSHNG-TON, ASSGNOR OF ONE-HALF TO C. J

STEPHANUS, 0F SEATTLE, WASHINGTON.

ORE-snrsrtnron.

Leeaeoi.

Specification of Letters Patent.

Patented Feb. l5, i921.

To all whom it may concern: l

Be it known that l, FRED CUSHMAN, a

Seattle, in the'county or' l'ing and State ot lVashington, have invented certain `new and useful Improvements in Ore-Separators, oi' which the following is a specification, reference being had to the accompanying drawings. e i

llhis invention relates to Vcertain improve ments in `ore separators and has relation more particularly to a'device of this general character especially designed and adapted for vuse inconnection with auriierous matter and is of such construction as to be readily adapted for use in placer and dritt mining or. for free milling quartz in connection with` a pulverizing machine; and it is an object of the invention toprovide a device or' this general character having novel and improved means whereby all of the values in the sand, gravel or quartz regardless of the our or float gold, will be reclaimed.

The invention also has for anV object to provide a device of this general character wherein a vibratory concentrating unit is employed and wherein movement is me-v chanically imparted thereto in one direction and automatically imparted in the opposite direction. y

rlhe invention also has for an object to provide a device of this general character including a vibratory concentrating unitand a sluice boxoperatively engaged there with and discharging thereto, said sluice box being vibrated under the influence ot the movements of the concentrating unit.'

er still further object or the invention. is to provide a device of this generalr character includingv a Aconcentrating unit having coacting therewith novel andimproved means for collecting thenour or float gold and` v wherein said means includes an endless col-' lecting table caused to travel intermittently The novel features oiC the invention will 1 hereinafter be definitely claimed. citizen of `the United States7V resicing at ln order that my invention may be the better imderstood, l will now proceed to de scribe the same with reference to the accompanying drawings, wherein- Figure l is a view in side elevation illustrating an ore separator constructed in accordance with an embodiment oi' my invention;

Fig. 2 is an enlarged Jfragmentary view in vertical section taken longitudinally or the concentrator boi; as herein included;

Fig. 3 is a view in top plan of the concentrator box as herein employed, the coacting bumper being shownin section;

Fig. 4 is a Yfragmentary view in side elevation oi the upper end portion of the con- Y centrator box; and

Fig. 5 is a fragmentary view in top plan of the lower end portion of the lower sluice box as herein disclosed.

As disclosed in the accompanying drawings, F denotes a frame of suitable construction and comiguration and which is provided with the depending hangers l capable of longitudinal adjustment through the medium of the nuts 2 in threadedv engagement therewith.

Engaged withthe hangers l are the flexible members 3 which serve to support the sluice boxes 4 and 5,`the adjacent ends of said sluice boxes being pivotally connected 'one with the other as indicated at 6, andsaid sluice boxes 4 and 5 are disposed on a predetermined incline. lt will be perceived that the support afforded by the 'flexible members 3 will permit said boxes to have a .f'ibratory movement and that the endwise adjustment ot the hangers l will permit a v varying or the angles of inclinations oi said boxes as the requirements of practice may determine.

rThe upper sluice box 4 discharges into the lower sluice box 5 and the lower end of the box 5 is provided with the extension or plate 7 to carry off the tailings.

The sluice boxes 4 and 5 are of any ordinary or preferred construction and the lower box 5 has positioned therebeneath and carried thereby the collecting apron or hood 8 into which is discharged the concentrates passing down the box 5.

The vapron or hood 8 is provided withl a discharge opening 9 preferably rectangular Cil in plan and which is defined by the depending sleeve or spout discharging into the concentrator box or unit 11. The box or unit 11 is disposed on a predetermined in-` eline opposite to that of the sluice boxes 4: and 5 and is supported for vibration through the medium of the hangers' 12 and vRotatably supported by the frame F above the box 11 and disposed transversely of said box is a shaft 16 adapted to be driven in any desired manner and which is -provided with the cam 17 coacting with the roller 18 rotatably supported by the upper agitated.

portion of the box 11, whereby it will bc perceived that the box 11 is caused to move in'one direction.

AOperatively engaged with the upper end portion of the box 11 at opposite sides thereof are'the rods 19 which are loosely disposed through the bumper 2G suitably supported by the frame VF, and the outer ends of the rods 19 are provided with ythe abutments or shoulders 21.'v

interposed between the bumper 2O and the abutments or shoulders 21 are the expansible members 22 herein disclosed as conventional coil springs encircling the rods 19. It will be perceived that as movement is imparted to the box 11 in one direction under the inj duence of the'cam 17, the expansible members 22 will be compressed so that when the cam 17 is disengaged from the roller 18, the box 1l will be `caused to automatically move in an opposite direction and with great force so that when the same contacts with the bumper 20, the box will be brought to a sudden stop with the result that the concen` tratesgwithin thebox 11 will be thoroughly ri'rhe upper end of the box 11 is provided withI the buffer 23 which is positioned for direct contact with the bumper 20 so that the life of the box 11 will be prolonged. Y

The lower portion of the box 5 has secured to the sides thereof the depending larms 24 which are pivotally engaged with the sides of the box 11 adjacent the upper end thereof, whereby it will be perceived that the vibration of movements of the'box 11 will result in the vibration of the boxes 1 and 5 so that the Y auriferous material passing over said boxes 4 and 5 will be eiiiectively agitated.

` The box 11 adjacent its upper end is provided in its bottom with the transverse opening 25 in which is rotatably mounted the roller 26 over which passes the upper stretch of the endless carpet or value collecting apron 27, said carpet or apron 27 passing downwardly of the box 11 and around the roller 28 positioned at the lower end of said box 11. The lower stretch of the carpet or apron 27 underlies the box k11 and passes over the guide roller 29 rotatably supported Yby and between theiarms 30 depending from opposite sides-of opening 25.

The arms 30 are adapted to guide thecarpet or apron 27-into a receptacleR containing water so that the flour or doating gold collected by said carpet or apron may be thoroughly washed therefrom and so that said iour or iioating gold may be reclaimed.

The roller 28 has coacting therewith the sprocket 31 around which is disposed the sprocket chain 32 which is also directed around the idle sprocket 33 rotatably sup# ported by a side ofthe box'll adjacent the upper end thereof. The sprocket 33 is also provided with -1 the ratchet Vteeth 3a with the box 11 adjacent the which coacts the gravity pawl. 35 pivotally supported by a longitudinal bottom 36 com# prised in the frame F andv positioned to one side of therbox 11, Bythis arrangement it` will be perceived that as the box 11 is caused to movejunder the influence ofthe cam 17, Y

' the sprocket 33 will be intermittently rotated through the coaction between the ratchet 34 n andthe pawl 35 whereby it will beperceived that the carpet or'apron 27 will be caused also to intermittently travel.

From the foregoing description, it is thought to kbe obvious that an ore separator constructed in accordance with my invention. is ofan extremely simple and comparatively inexpensive naturek and is particularly well adapted for use byrreason ofthe convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change andmodiication without material departure, from the principles and spirit .thereof andfor this reason I do not wish to be understood as limiting-myself to the precise arrangement` i lower end ofthe sluice box over which the tailings are adapted to be discharged, a corr; centrator box positioned below the sluice box and mounted for vibratory move-ment, arms: depending from the sides ofthe sluice box adjacent Vthe lower end thereof,` said varms being pivotally engaged with the vadjacent end portion of the concentrator box whereby the vibratory movement of the concentrator CII box serves to vibrate the sluice box, and means for vibrating the concentrator box.

2. An ore separator comprising, in combination, a sluice box mounted for vibratory movement and disposed longitudinally on a predetermined incline, a collecting hood underlying the sluice box and provided with a discharge opening, a discharge spout depending rom the hood land defining the discharge opening, a plate extending beyond the lower end of the sluice box over which the tailings are adapted to be discharged, a concentrator box positioned below the sluice box and mounted for vibratory movement,

said concentrator box being disposed longitudinally on a predetermined incline in a direction opposite to the inclination of the sluice box, the upper end portion of the con centrator box being provided with an opening, the depending spout of the collecting hood discharging within the concentrator box at a point below the opening, arms depending from the sides of the sluice box adjacent the lower end thereof, said arms being pivotally engaged with the adjacent end portion of the concentrator box whereby the vibratory movement of the concentrator box serves to vibrate the sluice box, means for vibrating the concentrator box, a. receptacle positioned below the concentrator box, an endless value collecting apron overlying the bottom of the concentrator box, passing through the opening in the concentrator box and extending within the receptacle, and means for imparting movement to the endless value collecting apron.

In testimony whereof(` I hereunto afix my signature in the presence of two witnesses.

FRED CUSHMAN. Witnesses P. O. HOLLAND, A. E. BORDERUE. 

